Seismic records were identified (false triggers were eliminated) both by a computer algorithm that found multiple triggers in a 22-second sliding time window and by inspection of seismograms plotted during data playback (see text). Events are listed by the start time of the earliest associated record (day, hour, minute UTC - characters 1-7 in the filename) and records are listed by the corresponding second-bin character (character 8 in the filename - A=0.000-2.999, B=3.000-5.999, ..., T=57.000-59.999). For example, an earthquake at 292 04:12 was recorded by two stations: DMD triggered between 04:12:45 and 04:12:48 (filename 2920412Pn.DMD) and RIN triggered between 04:13:00 and 04:13:03 (filename 2920413An.RIN). The computer algorithm also extracted hypocenter information for identified seismic events from USGS summary files - these data are presented here (as magnitudes only - the largest is listed if more than one event occurred in the sliding window), in Figure 9, and in Appendix A and B. The event used in the example above is identified as a magnitude-3.4 Loma Prieta aftershock at 292 04:12:43.39. (Hypocenter data were provided by D. Oppenheimer, USGS. We used versions of the 10/89, 11/89, 12/89, and 01/90 files that were current at the time of writing this report in July 1990. These hypocenters are of mixed provenance - RTP, CUSP, manual picks - and will be refined during the lifetime of this report. They are provided here only to help readers make preliminary correlations between earthquakes and recordings.)